Half Dome | |
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![]() Sunset over Half Dome from Glacier Point | |
Highest point | |
Elevation | 8,846 ft (2,696 m) NAVD 88 [1] |
Prominence | 1,360 ft (410 m) [1] |
Parent peak | Clouds Rest [1] |
Listing | Highest mountains of Yosemite NP |
Coordinates | 37°44′46″N119°31′59″W / 37.7460363°N 119.5329397°W [2] |
Geography | |
Country | United States |
State | California |
County | Mariposa |
Parent range | Sierra Nevada |
Topo map | USGS Half Dome |
Geology | |
Age of rock | Cretaceous, 93 Myr |
Mountain type | Quartz monzonite batholith |
Climbing | |
First ascent | 1875 by George G. Anderson |
Easiest route | Cable route |
Half Dome is a quartz monzonite batholith at the eastern end of Yosemite Valley in Yosemite National Park, California. It is a well-known rock formation in the park, named for its distinct shape. One side is a sheer face while the other three sides are smooth and round, making it appear like a dome cut in half. It stands at nearly 8,800 feet above sea level and is composed of quartz monzonite, an igneous rock that solidified several thousand feet within the Earth. At its core are the remains of a magma chamber that cooled slowly and crystallized beneath the Earth's surface. The solidified magma chamber was then exposed and cut in half by erosion, therefore leading to the geographic name Half Dome. [3]
The impression from the valley floor that this is a round dome that has lost its northwest half, is just an illusion. From Washburn Point, Half Dome can be seen as a thin ridge of rock, an arête, that is oriented northeast–southwest, with its southeast side almost as steep as its northwest side except for the very top. Although the trend of this ridge, as well as that of Tenaya Canyon, is probably controlled by master joints, 80 percent of the northwest "half" of the original dome may well still be there.
As late as the 1870s, Half Dome was described as "perfectly inaccessible" by Josiah Whitney of the California Geological Survey. [4] The summit was finally reached by George G. Anderson in October 1875, via a route constructed by drilling and placing iron eye bolts into the smooth rock. [5] Anderson had previously tried a variety of methods, including using pitch from nearby pine trees for extra friction. [6]
Anderson subsequently went on to add ropes to his eye bolts, so that other people could climb. Among those who took advantage was the first woman to climb Half Dome in 1876, S. L. Dutcher, of San Francisco. In 1877 James Mason Hutchings along with Anderson led a climb which included Hutchings' daughter Cosie, his son Willie, his mother-in-law Florence Sproat (aged 65), and two other women. [6] [7]
Today, Half Dome may be ascended in several different ways. Thousands of hikers reach the top each year by following an 8.5 mi (13.7 km) trail from the valley floor. After a rigorous 2 mi (3.2 km) approach, including several hundred feet of rock stairs, the final pitch up the peak's steep but somewhat rounded east face is ascended with the aid of a pair of post-mounted steel cables originally constructed close to the Anderson route in 1919.
Alternatively, over a dozen rock climbing routes lead from the valley up Half Dome's vertical northwest face. The first technical ascent was in 1957 via a route pioneered by Royal Robbins, Mike Sherrick, and Jerry Gallwas, today known as the Regular Northwest Face. Their five-day epic was the first Grade VI climb in the United States. [8] Their route has now been free climbed several times in a few hours' time. Other technical routes ascend the south face and the west shoulder.
The Half Dome Cable Route hike runs from the valley floor to the top of the dome in 8.2 mi (13 km) (via the Mist Trail), with 4,800 ft (1,460 m) of elevation gain. The length and difficulty of the trail used to keep it less crowded than other park trails, but trail traffic grew to as many as 1,000 people a day, and about 50,000 per year, before a permit system was introduced in 2010. [9] [10] [11] The hike can be done from the valley floor in a single long day, but many people break it up by camping overnight in Little Yosemite Valley. The trail climbs past Vernal Fall and Nevada Fall, then continues into Little Yosemite Valley, then north to the base of the northeast ridge of Half Dome itself.
The final 400 ft (120 m) ascent is steeply up the rock between two steel cables used as handholds. [12] The cables are fixed with bolts in the rock and raised onto a series of metal poles in late May (the poles do not anchor the cables). The cables are taken down from the poles for the winter in early October, but they are still fixed to the rock surface and can be used. The National Park Service recommends against climbing the route when the cables are down or when the surface of the rock is wet and slippery. [12] The Cable Route is rated class 3, while the same face away from the cables is rated class 5. [13]
The Cable Route can be crowded. Since 2010, all hikers who intend to ascend the Cable Route must first obtain permits when the cables are up between May and October. [14] Permits are limited to 300 per day, and as of 2022 [update] , more than 70,000 applications were received in the pre-season and daily permit lotteries. [15] Permits are checked by a ranger on the trail, and hikers without permits are not allowed to hike beyond the base of the sub-dome or to the bottom of the cables. Hikers caught bypassing the rangers to visit either the sub-dome or main dome without a permit face fines of up to $5,000 and/or 6 months in jail. [16]
Backpackers with an appropriate wilderness permit can receive a Half Dome permit when they pick up their wilderness permit with no additional reservation required. Rock climbers who reach the top of Half Dome without entering the subdome area can descend on the Half Dome Trail without a permit. [14]
The top of Half Dome is a large, flat area where climbers can relax and enjoy their accomplishment. The summit offers views of the surrounding areas, including Little Yosemite Valley and the Valley Floor. A notable location to one side of Half Dome is the "Diving Board", where Ansel Adams took his photograph Monolith, the Face of Half Dome on April 10, 1927. Often confused with "the Visor," a small overhanging ledge at the summit, the Diving Board is on the shoulder of Half Dome. [17]
From 1919 when the cables were erected through 2024, there have been 25 confirmed deaths on the cable section. [18] The latest fatality occurred on July 13, 2024. [19]
Lightning strikes can be a risk while on or near the summit. On July 27, 1985, five hikers were struck by lightning, resulting in two fatalities. [20]
The Cable Route was added to the National Register of Historic Places in 2012. [21]
Half Dome was originally called "Tis-sa-ack", meaning Cleft Rock in the language of the local Ahwahnechee people. Tis-sa-ack is also the name of the fourth route on the formation, ascended by Royal Robbins and Don Peterson over eight days in October 1969. Tis-sa-ack is the name of a mother from a native legend. The face seen in Half Dome is supposed to be hers. [35] Tis-sa-ack is the name of a Mono Lake Paiute girl in the Yosemite Native American legend.[ citation needed ] John Muir interchangeably used "Tissiack," [36] "South Dome," [37] and "Half Dome" in his writings.
Others say Ahwahneechee Native Americans named Half Dome "Face of a Young Woman Stained with Tears" ("Tis-se’-yak") because of the colonies of brown-black lichens that form dark vertical drip-like stripes along drainage tracks in the rock faces. [38] [39] [40]
Jack London's 1900 short story "Dutch Courage" tells of a fictional climb of Half Dome. [41]
Monolith, the Face of Half Dome is a black and white photograph taken by Ansel Adams in 1927 that depicts the western face of Half Dome as seen from the "Diving Board". [42] It was used by the Sierra Club as a visual aid for the environmental movement, and was a part of the portfolio Parmelian Prints of the High Sierras . The ashes of Ansel Adams were later scattered on Half Dome after he died. [43]
Half Dome was used as the logo for a software company, Sierra On-Line.
In 1971, outdoor recreation and climbing equipment company The North Face created their company logo, based upon a stylized depiction of the Half Dome formation. It is still their logo 50 years later. [44]
In 1988, Half Dome was featured on a 25 cent United States postage stamp. An image of Half Dome, along with John Muir and the California condor, appears on the California State Quarter, released in January 2005.
From 2010 until the introduction of REAL ID, California driver's licenses featured an illustration of Half Dome. [45] [46]
The design of the Wilshire Grand Center skyscraper in Los Angeles was inspired by Half Dome. [47]
Yosemite National Park is a national park in California. It is bordered on the southeast by Sierra National Forest and on the northwest by Stanislaus National Forest. The park is managed by the National Park Service and covers 759,620 acres in four counties – centered in Tuolumne and Mariposa, extending north and east to Mono and south to Madera. Designated a World Heritage Site in 1984, Yosemite is internationally recognized for its granite cliffs, waterfalls, clear streams, groves of giant sequoia, lakes, mountains, meadows, glaciers, and biological diversity. Almost 95 percent of the park is designated wilderness. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada.
Yosemite Valley is a glacial valley in Yosemite National Park in the western Sierra Nevada mountains of Central California, United States. The valley is about 7.5 mi (12.1 km) long and 3,000–3,500 ft (910–1,070 m) deep, surrounded by high granite summits such as Half Dome and El Capitan, and densely forested with pines. The valley is drained by the Merced River, and a multitude of streams and waterfalls flow into it, including Tenaya, Illilouette, Yosemite and Bridalveil Creeks. Yosemite Falls is the highest waterfall in North America and is a big attraction, especially in the spring, when the water flow is at its peak. The valley is renowned for its natural environment and is regarded as the centerpiece of Yosemite National Park.
Yosemite Falls is the highest waterfall in Yosemite National Park, dropping a total of 2,425 feet (739 m) from the top of the upper fall to the base of the lower fall. Located in the Sierra Nevada of California, it is a major attraction in the park, especially in late spring when the water flow is at its peak.
The John Muir Trail (JMT) is a long-distance trail in the Sierra Nevada mountain range of California, passing through Yosemite, Kings Canyon and Sequoia National Parks. It is named after John Muir, a naturalist.
Tuolumne Meadows is a gentle, dome-studded, sub-alpine meadow area along the Tuolumne River in the eastern section of Yosemite National Park in the United States. Its approximate location is 37°52.5′N119°21′W. Its approximate elevation is 8,619 feet (2,627 m). The term Tuolumne Meadows is also often used to describe a large portion of the Yosemite high country around the meadows, especially in context of rock climbing.
The Ansel Adams Wilderness is a wilderness area in the Sierra Nevada of California, United States. The wilderness spans 231,533 acres (93,698 ha); 33.9% of the territory lies in the Inyo National Forest, 65.8% is in the Sierra National Forest, and the remaining 0.3% covers nearly all of Devils Postpile National Monument. Yosemite National Park lies to the north and northwest, while the John Muir Wilderness lies to the south.
Mount Whitney is the highest mountain in the contiguous United States, with an elevation of 14,505 feet (4,421 m). It is in East–Central California, in the Sierra Nevada, on the boundary between California's Inyo and Tulare counties, and 84.6 miles (136.2 km) west-northwest of North America's lowest topographic point, Badwater Basin in Death Valley National Park, at 282 ft (86 m) below sea level. The mountain's west slope is in Sequoia National Park and the summit is the southern terminus of the John Muir Trail, which runs 211.9 mi (341.0 km) from Happy Isles in Yosemite Valley. The eastern slopes are in Inyo National Forest in Inyo County. Mount Whitney is ranked 18th by topographic isolation.
The Mist Trail is one of the most popular short hikes in Yosemite National Park, California, USA. The steep hike follows the Merced River, starting at Happy Isles in Yosemite Valley, past Vernal Fall and Emerald Pool, to Nevada Fall.
El Capitan is a vertical rock formation in Yosemite National Park, on the north side of Yosemite Valley, near its western end. The granite monolith is about 3,000 feet (914 m) from base to summit along its tallest face and is a world-famous location for big wall climbing, including the disciplines of aid climbing, free climbing, and more recently for free solo climbing.
Lembert Dome is a granite dome rock formation in Yosemite National Park in the US state of California. The dome soars 800 feet (240 m) above Tuolumne Meadows and the Tuolumne River and can be hiked starting at the Tioga Road in the heart of Tuolumne Meadows, 8 miles (13 km) west of the Tioga Pass Entrance to Yosemite National Park. The landform is an example of a rôche moutonnée with clear lee and stoss slopes.
Steve Roper is a noted climber and historian of the Sierra Nevada in the United States. He along with Allen Steck are the founding editors of the Sierra Club journal Ascent.
Tenaya Lake is an alpine lake in Yosemite National Park, located between Yosemite Valley and Tuolumne Meadows. The surface of Tenaya Lake has an elevation of 8,150 feet (2,484 m). The lake basin was formed by glacial action, which left a backdrop of light granite rocks, whose beauty was known to the Native Americans. Today, Tenaya Lake is easily accessible by State Route 120 and is a popular lake for water activities.
Royal Robbins was one of the pioneers of American rock climbing. After learning to climb at Tahquitz Rock, he went on to make first ascents of many big wall routes in Yosemite. As an early proponent of boltless, pitonless clean climbing, he, along with Yvon Chouinard, was instrumental in changing the climbing culture of the late 1960s and early 1970s by encouraging the use and preservation of the natural features of the rock. He went on to become a well-known kayaker.
Warren Harding was one of the most accomplished and influential American big wall climbers and aid climbers of the 1950s to 1970s. He was the leader of the first team to climb El Capitan, Yosemite Valley, in 1958. The route they climbed, known as The Nose, ascends 2,900 feet (880 m) up the central buttress of what is one of the largest granite monoliths in the world. Harding made many first ascents in Yosemite, some 28 in all, including The Wall of Early Morning Light.
Jim Bridwell was an American rock climber and mountaineer, active from 1965 in Yosemite Valley, but later in Patagonia and Alaska. He was noted for pushing the standards of both aid climbing and big wall climbing, and later alpine climbing. He wrote numerous articles on climbing and developed several important pieces of aid climbing equipment. Bridwell was an apprentice to Royal Robbins and Warren Harding, and later the unofficial leader of the Stonemasters.
The Regular Northwest Face of Half Dome was the first Grade VI big wall climbing route in the United States. It was first climbed in 1957 by a team consisting of Royal Robbins, Mike Sherrick, and Jerry Gallwas. Its current aid climbing rating is VI 5.9 A1 or 5.12 for the free climbing variation. It is recognized in the historic climbing text Fifty Classic Climbs of North America and considered a classic around the world.
Jules Marquard Eichorn was an American mountaineer, environmentalist, and music teacher.
Jerry Gallwas is an American rock climber active in the 1950s during the dawn of the Golden Age of Yosemite Rock Climbing. He achieved a number of pioneering first ascents including sandstone spires in the American Southwest, and the first ascent of the Northwest Face of Half Dome with Royal Robbins and Mike Sherrick in 1957. Gallwas made his own heat-treated chrome-molybdenum steel alloy pitons, which contributed to the success of the climb.
Hiking, rock climbing, and mountain climbing around Tuolumne Meadows in Yosemite National Park has many options.
I have gazed on Tissiack a thousand times — in days of solemn storms, and when her form shone divine with the jewelry of winter, or was veiled in living clouds; and I have heard her voice of winds, and snowy, tuneful waters when floods were falling.
With the exception of a few spires and pinnacles, the South Dome is the only rock about the Valley that is strictly inaccessible without artificial means, and its inaccessibility is expressed in severe terms.